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This inverter circuit can provide up to 800mA of 12V power from a 6V supply. For example, you could run 12V car accessories in a 6V (British?) car. The circuit is simple, about 75% efficient and quite useful. By changing just a few components, you can also modify it for different voltages. Part List: R1, R4 2.2K 1/4W Resistor R2, R3 4.7K 1/4W Resistor R5 1K 1/4W Resistor R6 1.5K 1/4W Resistor R7 33K 1/4W Resistor R8 10K 1/4W Resistor C1,C2 0.1uF Ceramic Disc Capacitor C3 470uF 25V Electrolytic Capcitor D1 1N914 Diode D2 1N4004 Diode D3 12V 400mW Zener Diode Q1, Q2, Q4 BC547 NPN Transistor Q3 BD679 NPN Transistor L1 See Notes MISC Heatsink For Q3, Binding Posts (For Input/Output), Wire, Board source:LINK

A 6 watt audio amplifier circuit using TDA2613 is shown here. TDA2613 is an integrated Hi-Fi  audio amplifier IC from Philips Semiconductors. The IC is switch ON / switch OFF click proof, short circuit proof, thermally protected and is available in 9 pin single in line plastic package. In the given circuit, TDA2613 is wired to operate from a single supply. Capacitor C4 is the input DC decoupler while capacitors C5, C6 are power supply filters. Input audio is fed to the non inverting input through capacitor C4. Inverting input and Vp/2 pins of the IC are tied together and connected to ground through capacitor C3. Capacitor C2 couples the speaker to the ICs output and the network comprising of capacitor C1 and resistor R1 improves the high frequency stability. . Reliable 6 Watt Hi Fi Audio Amplifier Circuit diagram Notes. Assemble the circuit on good quality PCB. Supply voltage (Vs) can be anything between 15 to 24V DC. Heat sink is necessary for TDA2613. Do not give more than 24V to...

A 6 watt audio amplifier circuit using TDA2613 is shown here. TDA2613 is an integrated Hi-Fi  audio amplifier IC from Philips Semiconductors. The IC is switch ON / switch OFF click proof, short circuit proof, thermally protected and is available in 9 pin single in line plastic package. In the given circuit, TDA2613 is wired to operate from a single supply. Capacitor C4 is the input DC decoupler while capacitors C5, C6 are power supply filters. Input audio is fed to the non inverting input through capacitor C4. Inverting input and Vp/2 pins of the IC are tied together and connected to ground through capacitor C3. Capacitor C2 couples the speaker to the ICs output and the network comprising of capacitor C1 and resistor R1 improves the high frequency stability. Reliable 6 Watt Hi Fi Audio Amplifier Circuit diagram Notes. Assemble the circuit on good quality PCB. Supply voltage (Vs) can be anything between 15 to 24V DC. Heat sink is necessary for TDA2613 . Do not give more than 24V ...

    The Nexus 6 would have a 5.9 inch screen with QHD resolution (2K), 13 megapixel camera with optical image stabilizer and a metal frame and the new version Android L. The Google phone, Nexus, will continue to grow after all Nexus 6 and come with a 5.9 inch screen, multiple rumors say. Although the photo is an image (render) created by Android Police, every detail which is present in this Nexus 6 has been based on rumors you've heard the blog and that have circulated on the Internet. According to AP, the official name of the new Google phone, manufactured by Motorola, Nexus 6 (Shamu) and would be called based on the new Moto X design, but in a larger size, black front speakers and a metal frame around cell. The back of the Nexus 6 include a 13 megapixel camera with optical image stabilization, dual flash, 3200mAh + battery, a front 2-megapixel camera and QHD (2K) screen. With these reports on the Nexus 6 hope this be a new cell showed both is size and its features and compon...

RF Generator 6 GHz Circuit Diagram. When we talk about high-frequency, everything seems to be difficult, a simple coil becomes a feat. Doing a search on the Internet found that generator "comb" (comb generator), which is a signal generator that produces multiple harmonics of your input signal. The appearance of the output on a spectrum analyzer resemble a comb, hence the name. Comb generators are simpler to build and seem to work well up to 1 GHz This generator I found surprised me because he was 6 GHz has a crystal oscillator 96 MHz (third overtone), capacitively coupled to a broadband amplifier using IC mar3 and capacitively coupled to a back-to-back diode set low capacitance PIN. According to the creator of this circuit was originally designed to produce a reference signal in the amateur radio band of 2.4 GHz, hence the 96.013 MHz crystal RF Generator 6 GHz Circuit Diagram

Taiwan Semi (TSM) May be Sole Manufacturer of Apple's (AAPL) A8 Chips for iPhone 6. Taiwan Semi (NYSE: TSM) is up in early trading Wednesday following reports that the company might have scored a big chip deal. Taiwam's Commercial Times reported that Taiwan Semi was tapped to supply the A8 chip in Apple's upcoming iPhone 6. The news is positive for Taiwan Semi and also hints that Apple is further distancing itself from rival Samsung. Production on the chips, which use a 20-nanometer process and have a 64-bit processor core, was said to begin in February. Taiwan Semi was also said to get most of the manufacturing orders for logic and power management integrated chips (ICs). Jefferies said earlier Wednesday that the iPhone 6 might debut in late summer and the Commercial Times is also looking for a Q314 launch. Finally, the Commercial Times thinks revenue for Q214 will rise 20 to 25 percent, better than previous market forecasts calling for a 15 to 20 percent gain. Taiwan Semi...

In this 2-7V power supply circuit, for our purpose, we chose IC 723 instead of a three pin voltage regulator for-why we find it protean and more advantageous in technical details. Notes:  Heatsinks of Tr2 and Tr3 transistors must be sufficiently large. To archive R4,R5 and R6 values, we used some suitable resistors in parallel. For R4 and R5 two parallel connected 0.3ohm/5W resistors for each are used. To take 6A output, we connected two 0.22ohm/5W resistors in parallel, and to take 8A output we connected three 0.33ohm/5W resistors in parallel instead of R6 resistor. If you change the marked component values properly you can get up to 14V output. For this situation you must disconnect R1,R2,C5,C6,C1,C2,D1,D2  components and connect the positive terminal of D3 directly to the rectified and stabilized supply. TIP142 is a darlington transistor so you can not change it with other normal transistors. For an example of the circuit operation; When a 0.68 ohm load was connected, ...